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Add check for overlapping subnets

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Signed-off-by: Abhinandan Prativadi <abhi@docker.com>
This commit is contained in:
Abhinandan Prativadi 2018-05-10 12:14:44 -07:00
parent 60d8639a81
commit 9fe5cc10b2
1 changed files with 4 additions and 3 deletions
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7
libnetwork/ipam/structures.go
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@ -262,12 +262,13 @@ func (aSpace *addrSpace) updatePoolDBOnAdd(k SubnetKey, nw *net.IPNet, ipr *Addr
defer aSpace.Unlock()
// Check if already allocated
if p, ok := aSpace.subnets[k]; ok {
if _, ok := aSpace.subnets[k]; ok {
if pdf {
return nil, types.InternalMaskableErrorf("predefined pool %s is already reserved", nw)
}
aSpace.incRefCount(p, 1)
return func() error { return nil }, nil
// This means the same pool is already allocated. updatePoolDBOnAdd is called when there
// is request for a pool/subpool. It should ensure there is no overlap with existing pools
return nil, ipamapi.ErrPoolOverlap
}
// If master pool, check for overlap